Synthesis and herbicidal activity of 2-(substituted phenoxyacetoxy)alkyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one containing fluorine
作者:Wei Wang、Hong-Wu He、Na Zuo、Xin Zhang、Ji-Sheng Lin、Wei Chen、Hao Peng
DOI:10.1016/j.jfluchem.2012.06.020
日期:2012.10
fluorine-containing group as X or Y on benzene ring had a very important effect on herbicidal activity. Compound 5l 2-[(2-chloro-4-fluorophenoxy)acetoxy](methyl)methyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one showed notable herbicidal activity, with 100% inhibition against A. theophrasti and A. retroflexus; and compound 5m 2-(3-trifluoromethylphenoxyacetoxy)(methyl)methyl-5,5-dimethyl-1,3,2-dioxaphosphinan-2-one
设计并合成了一系列新颖的2-(取代的苯氧基乙酰氧基)烷基-5,5-二甲基-1,3,2-二氧杂膦烷-2-含氟5a-n和无氟5o-q。生物测定的结果表明,在出苗后以150 g ai / ha的剂量处理时,某些目标化合物对Ab麻,芥菜,retro菜和梨形斑草具有优异的除草活性。可以发现苯环上含氟基团X或Y的类型和位置对除草活性有非常重要的影响。化合物5l2-[((2-氯-4-氟代苯氧基)乙酰氧基](甲基)甲基-5,5-二甲基-1,3,2-二氧杂膦烷-2-酮具有显着的除草活性,对百里香曲霉和拟南芥具有100%的抑制作用。逆行鞭毛; 和化合物5米2-(3- trifluoromethylphenoxyacetoxy)(甲基)甲基-5,5-二甲基-1,3,2- dioxaphosphinan -2-酮与抗100%抑制A.苘甚至在75克剂量ai / ha的。进一步的作物选择性测试表明,化合物5g 2-(